Fucking my friends girlfriend and her hot friend

So tonight I went to a friends house, met some new people and sat by a small camp fire. I was actually coming over to meet his girlfriends hot friend, Lucy, from out of town.. it’s her birthday weekend. I noticed Lucy make her way inside to make another mixed drink, so I walked in a few minutes after her and began speaking. Me being the straight forward person that I am, I immediately told Lucy that I thought she was HOT and that her ass looked really sexy in the jeans she was wearing, then making the comment that she should let me see her ass without those pants on. I guess my straight forward tactic worked because she came up to me and started rubbing my body, turned and rubbed her ass on my dick. She turns her head back and says “oh you want to see this ass without the pants?” Then she pulls her pants down to show her bare ass and immediately, I had to start rubbing my dick with one hand while I rubbed her ass with the other. I walked her to the bedroom and laid her down, and told her that I was gonna give her the best birthday orgasm she could imagine and I started eating her pussy. Suddenly my friends girlfriend walks in and is shocked but also turned on since she hasn’t been able to get her man to fuck her lately. She then strips and lays next to Lucy. Next thing I know, they are both ready to be fucked and I make sure I fuck them senseless.